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authorJoseph Myers <joseph@codesourcery.com>2012-07-01 13:06:41 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-07-01 13:06:41 +0000
commite64ac02c24b43659048622714afdc92fedf561fa (patch)
tree37162878b72d302de351788bec4c9360c9d55f1d /ports/sysdeps/arm/feenablxcpt.c
parenta20c2b3c87aebc7d4b090c622d36480263b80042 (diff)
downloadglibc-e64ac02c24b43659048622714afdc92fedf561fa.tar.gz
Move all files into ports/ subdirectory in preparation for merge with glibcglibc-2.16-ports-before-merge
Diffstat (limited to 'ports/sysdeps/arm/feenablxcpt.c')
-rw-r--r--ports/sysdeps/arm/feenablxcpt.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/ports/sysdeps/arm/feenablxcpt.c b/ports/sysdeps/arm/feenablxcpt.c
new file mode 100644
index 0000000000..3b2b934f57
--- /dev/null
+++ b/ports/sysdeps/arm/feenablxcpt.c
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+/* Enable floating-point exceptions.
+ Copyright (C) 2001, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Philip Blundell <philb@gnu.org>, 2001.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <fpu_control.h>
+
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+#include <sysdep.h>
+
+int
+feenableexcept (int excepts)
+{
+ if (GLRO (dl_hwcap) & HWCAP_ARM_VFP)
+ {
+ unsigned long int new_exc, old_exc;
+
+ _FPU_GETCW(new_exc);
+
+ old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
+
+ excepts &= FE_ALL_EXCEPT;
+
+ new_exc |= (excepts << FE_EXCEPT_SHIFT);
+
+ _FPU_SETCW(new_exc);
+
+ return old_exc;
+ }
+
+ /* Unsupported, so return -1 for failure. */
+ return -1;
+}